Notice of White Scroll Removal

So can you no longer use white scrolls? I think I have a couple, but I could just use them instead of exchange them (I was saving up to use a bunch at once hoping it wouldn't be as depressing because maybe some scrolls would work) unless they disabled them completely.

And what's a shield scroll? Is that where the item doesn't blow up when you enhance it and it fails? I haven't kept up on all their cash shop scrolling features. Shield scrolls might be better than white scrolls in that case.

Shield scrolls are the cash shop equivalent of white scrolls, except you have to drag the scroll onto your item as opposed to the pop up when you have a white scroll in your inventory.